Answer:
(3.2, 5)
or
[tex]x = 3.2 \\ y = 5[/tex]
Step-by-step explanation:
I will use elimination for this one, by changing the 2nd equation by a factor of -1, to find y.
[tex] + 5x + 7y = 19 \\ - 5x - 4y = - 4 \\ - - - - - - - - \\ 3y = 15 \\ \\ y = 5 \\[/tex]
Now, substituting the y in the 1st equation, we solve for x.
[tex]5x + 7(5) = 19 \\ 5x + 35 = 19 \\ 5x = 16 \\ x = 3.2[/tex]
